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Diffstat (limited to 'shell/hush.c')
-rw-r--r--shell/hush.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/shell/hush.c b/shell/hush.c
index 891d87b..6f394d1 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -2287,7 +2287,7 @@ static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg, char
* expanded result may need to be globbed
* and $IFS-splitted */
debug_printf_subst("SUBST '%s' first_ch %x\n", arg, first_ch);
- process_command_subs(&subst_result, arg);
+ G.last_exitcode = process_command_subs(&subst_result, arg);
debug_printf_subst("SUBST RES '%s'\n", subst_result.data);
val = subst_result.data;
goto store_val;
@@ -3904,7 +3904,7 @@ static NOINLINE int run_pipe(struct pipe *pi)
/* if someone gives us an empty string: `cmd with empty output` */
if (!argv_expanded[0]) {
debug_leave();
- return 0;
+ return 0; // or G.last_exitcode? see emptytick.tests
}
x = find_builtin(argv_expanded[0]);
@@ -5202,10 +5202,10 @@ static int fetch_heredocs(int heredoc_cnt, struct parse_context *ctx, struct in_
#if ENABLE_HUSH_TICK
-static FILE *generate_stream_from_string(const char *s)
+static FILE *generate_stream_from_string(const char *s, pid_t *pid_p)
{
- FILE *pf;
- int pid, channel[2];
+ pid_t pid;
+ int channel[2];
# if !BB_MMU
char **to_free;
# endif
@@ -5291,6 +5291,7 @@ static FILE *generate_stream_from_string(const char *s)
}
/* parent */
+ *pid_p = pid;
# if ENABLE_HUSH_FAST
G.count_SIGCHLD++;
//bb_error_msg("[%d] fork in generate_stream_from_string: G.count_SIGCHLD:%d G.handled_SIGCHLD:%d", getpid(), G.count_SIGCHLD, G.handled_SIGCHLD);
@@ -5300,8 +5301,8 @@ static FILE *generate_stream_from_string(const char *s)
free(to_free);
# endif
close(channel[1]);
- pf = fdopen(channel[0], "r");
- return pf;
+//TODO: libbb: fdopen_or_die?
+ return fdopen(channel[0], "r");
}
/* Return code is exit status of the process that is run. */
@@ -5309,9 +5310,10 @@ static int process_command_subs(o_string *dest, const char *s)
{
FILE *pf;
struct in_str pipe_str;
- int ch, eol_cnt;
+ pid_t pid;
+ int status, ch, eol_cnt;
- pf = generate_stream_from_string(s);
+ pf = generate_stream_from_string(s, &pid);
if (pf == NULL)
return 1;
close_on_exec_on(fileno(pf));
@@ -5331,16 +5333,14 @@ static int process_command_subs(o_string *dest, const char *s)
o_addQchr(dest, ch);
}
- debug_printf("done reading from pipe, pclose()ing\n");
- /* Note: we got EOF, and we just close the read end of the pipe.
- * We do not wait for the `cmd` child to terminate. bash and ash do.
- * Try these:
- * echo `echo Hi; exec 1>&-; sleep 2` - bash waits 2 sec
- * `false`; echo $? - bash outputs "1"
- */
+ debug_printf("done reading from `cmd` pipe, closing it\n");
fclose(pf);
- debug_printf("closed FILE from child. return 0\n");
- return 0;
+ /* We need to extract exitcode. Test case
+ * "true; echo `sleep 1; false` $?"
+ * should print 1 */
+ safe_waitpid(pid, &status, 0);
+ debug_printf("child exited. returning its exitcode:%d\n", WEXITSTATUS(status));
+ return WEXITSTATUS(status);
}
#endif /* ENABLE_HUSH_TICK */